dm: tegra: dts: add aliases for spi on apalis_t30

All boards with a SPI interface have a suitable spi alias except Apalis
T30. Add these missing aliases just as the following commit did for the
others:

d2f60f93 "dm: tegra: dts: Add aliases for spi on tegra30 boards"

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>